Attacks against asylum seekers increased more than five-fold in 2015 – when the migrant crisis came to head.

Nazism was said to be waning before the crisis.

Now membership of banned Far Right organisations is spiking again with an estimated 23,000 people designated "extreme”.

Quent added: "The online discourse is incredibly uninhibited.

“If the perception is that the state is no longer capable of protecting its borders, or its people, from terrorism, there is an increase in the perceived legitimacy of forming one's own organizations, of resorting to violence oneself, of arming oneself."